Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756288AbaGWMaj (ORCPT ); Wed, 23 Jul 2014 08:30:39 -0400 Received: from mta-out1.inet.fi ([62.71.2.202]:35134 "EHLO jenni1.inet.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750787AbaGWMai (ORCPT ); Wed, 23 Jul 2014 08:30:38 -0400 Date: Wed, 23 Jul 2014 15:30:28 +0300 From: "Kirill A. Shutemov" To: Matthew Wilcox Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, willy@linux.intel.com Subject: Re: [PATCH v8 00/22] Support ext4 on NV-DIMMs Message-ID: <20140723123028.GA11355@node.dhcp.inet.fi> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 22, 2014 at 03:47:48PM -0400, Matthew Wilcox wrote: > One of the primary uses for NV-DIMMs is to expose them as a block device > and use a filesystem to store files on the NV-DIMM. While that works, > it currently wastes memory and CPU time buffering the files in the page > cache. We have support in ext2 for bypassing the page cache, but it > has some races which are unfixable in the current design. This series > of patches rewrite the underlying support, and add support for direct > access to ext4. Matthew, as discussed before, your patchset make exessive use of i_mmap_mutex. Are you going to address this later? Or what's the plan? -- Kirill A. Shutemov -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/